Expand and simplify (6x+9)(4x+7)

• Using the "crabs claw" or "parrot beak" method, draw lines linking the two brackets (demonstrated on whiteboard)

• 6x x 4x = 24x²

• 6x x 7 = 42x

• 9 x 4x = 36x

• 9 x 7 = 63

Answer = 24x² + 42x + 36x +63

= 24x² + 78x + 63